Diagnostic apparatus



Figure 1.1 is a perspective view of a diagnostic apparatus;

Figure 1.2 is a front view thereof;

Figure 1.3 is a right view thereof;

Figure 1.4 is a left view thereof;

Figure 1.5 is a top view thereof; and,

Figure 1.6 is a back view thereof.

The broken line areas showing portions of the diagnostic apparatus form no part of the claimed design. 

CLAIM The ornamental design for a diagnostic apparatus, as shown and described. 